基于剩余油可动潜力控制程度的井网调整研究

发布时间：2018-07-29 13:22

【摘要】：为评价并挖潜高含水油藏的剩余油,开展了剩余油可动潜力控制的理论研究。将剩余油可采储量丰度、油相流动系数、流线密度作为剩余油可动潜力控制的评价指标,利用隶属函数将3个参数进行归一化,建立了剩余油可动潜力控制程度的评价体系。分析了高含水期反九点井网的剩余油可动潜力控制程度的分布特征,设计了5种井网调整方式,并利用调整后的剩余油可动潜力控制程度评价井网调整效果。结果表明:所建立的剩余油可动潜力控制程度评价体系能更合理地反映剩余油的分布和流动特征;运用剩余油可动潜力控制程度评价的井网调整效果由好到差为九点法、抽稀大五点法、直线排状加密、直线排状、不调整反九点法、五点法,并通过油藏数值模拟验证了结果的正确性。该研究对高含水油藏剩余油的评价以及井网调整具有重要的指导意义。
[Abstract]:In order to evaluate and exploit the remaining oil in high water cut reservoirs, a theoretical study on the movable potential control of remaining oil was carried out. The remaining oil recoverable reserves abundance, oil phase flow coefficient and streamline density are taken as the evaluation indexes of residual oil movable potential control. The three parameters are normalized by membership function, and the evaluation system of residual oil movable potential control degree is established. The distribution characteristics of residual oil movable potential control degree of reverse nine-spot well pattern in high water cut period are analyzed. Five kinds of well pattern adjustment methods are designed, and the adjusted residual oil movable potential control degree is used to evaluate the effect of well pattern adjustment. The results show that the evaluation system of residual oil movable potential control degree can reflect the distribution and flow characteristics of remaining oil more reasonably, and the effect of well pattern adjustment by using residual oil movable potential control degree evaluation is from good to bad to nine points method. The method of thinning big five points, straight line row encryption, straight line arrangement, non adjusting inverse nine point method, five point method are used to verify the correctness of the results. This study has important guiding significance for the evaluation of remaining oil in high water cut reservoir and well pattern adjustment.
【作者单位】：中国石油大学(华东);中国石化胜利油田分公司;
【基金】：国家油气重大专项“特高含水后期整装油田延长经济寿命期开发技术”(2016ZX05011-001)
【分类号】：TE327

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